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Posted by Dee on July 06, 2007 at 10:24:07:
In Reply to: Re: Ergomax or equivalant posted by HeatPro on July 05, 2007 at 10:32:22:
: The mixing valve is a passive machine that makes no difference in energy.
: The benefit of the mixing valve aside from the temperature safety is that you are mixing cold with the hot, so 2 gallons of 180 hot with 1 gallon of 70 cold makes 3 gallons per minute (180 gallons per hour capability vs 120 gph.) Thus the ability to take a shower AND fill something else.
Thank you for your reply. I meant to say has anyone figured out how much energy is wasted in heating your potable water to the same temperature as your boiler water (through the exchanger) and then cooling it back down with a mixing valve and then proportioning it to your overall effiecency. For instance, the potable water is going to "steal" 2000 BTUs from your boiler water and then transfer that to city water via the mixing valve. I just made up the numbers but I hope it makes sense.
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